baea531971433f4a54c80886c34195e64ece7920
[lttng-tools.git] / src / common / compat / endian.h
1 /*
2 * Copyright (C) 2011 - David Goulet <dgoulet@efficios.com>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2 only,
6 * as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 */
17
18 #ifndef _COMPAT_ENDIAN_H
19 #define _COMPAT_ENDIAN_H
20
21 #ifdef __linux__
22 #include <endian.h>
23
24 /*
25 * htobe/betoh are not defined for glibc <2.9, so add them
26 * explicitly if they are missing.
27 */
28 #ifdef __USE_BSD
29 /* Conversion interfaces. */
30 # include <byteswap.h>
31
32 # if __BYTE_ORDER == __LITTLE_ENDIAN
33 # ifndef htobe16
34 # define htobe16(x) __bswap_16(x)
35 # endif
36 # ifndef htole16
37 # define htole16(x) (x)
38 # endif
39 # ifndef be16toh
40 # define be16toh(x) __bswap_16(x)
41 # endif
42 # ifndef le16toh
43 # define le16toh(x) (x)
44 # endif
45
46 # ifndef htobe32
47 # define htobe32(x) __bswap_32(x)
48 # endif
49 # ifndef htole32
50 # define htole32(x) (x)
51 # endif
52 # ifndef be32toh
53 # define be32toh(x) __bswap_32(x)
54 # endif
55 # ifndef le32toh
56 # define le32toh(x) (x)
57 # endif
58
59 # ifndef htobe64
60 # define htobe64(x) __bswap_64(x)
61 # endif
62 # ifndef htole64
63 # define htole64(x) (x)
64 # endif
65 # ifndef be64toh
66 # define be64toh(x) __bswap_64(x)
67 # endif
68 # ifndef le64toh
69 # define le64toh(x) (x)
70 # endif
71
72 # else /* __BYTE_ORDER == __LITTLE_ENDIAN */
73 # ifndef htobe16
74 # define htobe16(x) (x)
75 # endif
76 # ifndef htole16
77 # define htole16(x) __bswap_16(x)
78 # endif
79 # ifndef be16toh
80 # define be16toh(x) (x)
81 # endif
82 # ifndef le16toh
83 # define le16toh(x) __bswap_16(x)
84 # endif
85
86 # ifndef htobe32
87 # define htobe32(x) (x)
88 # endif
89 # ifndef htole32
90 # define htole32(x) __bswap_32(x)
91 # endif
92 # ifndef be32toh
93 # define be32toh(x) (x)
94 # endif
95 # ifndef le32toh
96 # define le32toh(x) __bswap_32(x)
97 # endif
98
99 # ifndef htobe64
100 # define htobe64(x) (x)
101 # endif
102 # ifndef htole64
103 # define htole64(x) __bswap_64(x)
104 # endif
105 # ifndef be64toh
106 # define be64toh(x) (x)
107 # endif
108 # ifndef le64toh
109 # define le64toh(x) __bswap_64(x)
110 # endif
111
112 # endif /* __BYTE_ORDER == __LITTLE_ENDIAN */
113 #endif /* __USE_BSD */
114
115 #elif defined(__FreeBSD__)
116 #include <machine/endian.h>
117 #else
118 #error "Please add support for your OS."
119 #endif
120
121 #endif /* _COMPAT_ENDIAN_H */
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